progs/perf: added glCopyTex[Sub]Image2D test

1 files changed, 214 insertions, 0 deletions

diff --git a/progs/perf/copytex.c b/progs/perf/copytex.c
new file mode 100644
index 00000000000..f7a6b8aec39
--- /dev/null
+++ b/progs/perf/copytex.c
@@ -0,0 +1,214 @@
+/*
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VMWARE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Measure glCopyTex[Sub]Image() rate.
+ * Create a large, off-screen framebuffer object for rendering and
+ * copying the texture data from it since we can't make really large
+ * on-screen windows.
+ *
+ * Brian Paul
+ * 22 Sep 2009
+ */
+
+#include <string.h>
+#include "glmain.h"
+#include "common.h"
+
+int WinWidth = 100, WinHeight = 100;
+
+static GLuint VBO, FBO, RBO, Tex;
+
+const GLsizei MinSize = 16, MaxSize = 4096;
+static GLsizei TexSize;
+
+static const GLboolean DrawPoint = GL_TRUE;
+static const GLboolean TexSubImage4 = GL_FALSE;
+
+struct vertex
+{
+   GLfloat x, y, s, t;
+};
+
+static const struct vertex vertices[1] = {
+   { 0.0, 0.0, 0.5, 0.5 },
+};
+
+#define VOFFSET(F) ((void *) offsetof(struct vertex, F))
+
+
+/** Called from test harness/main */
+void
+PerfInit(void)
+{
+   const GLenum filter = GL_LINEAR;
+   GLenum stat;
+
+   if (!PerfExtensionSupported("GL_EXT_framebuffer_object")) {
+      perf_printf("copytex: GL_EXT_framebuffer_object not supported\n");
+      exit(0);
+   }
+
+   /* setup VBO */
+   glGenBuffersARB(1, &VBO);
+   glBindBufferARB(GL_ARRAY_BUFFER_ARB, VBO);
+   glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(vertices),
+                   vertices, GL_STATIC_DRAW_ARB);
+
+   glVertexPointer(2, GL_FLOAT, sizeof(struct vertex), VOFFSET(x));
+   glTexCoordPointer(2, GL_FLOAT, sizeof(struct vertex), VOFFSET(s));
+   glEnableClientState(GL_VERTEX_ARRAY);
+   glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+
+   /* setup texture */
+   glGenTextures(1, &Tex);
+   glBindTexture(GL_TEXTURE_2D, Tex);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
+   glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
+   glEnable(GL_TEXTURE_2D);
+
+   /* setup rbo */
+   glGenRenderbuffersEXT(1, &RBO);
+   glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, RBO);
+   glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_RGBA, MaxSize, MaxSize);
+
+   /* setup fbo */
+   glGenFramebuffersEXT(1, &FBO);
+   glBindFramebufferEXT(GL_FRAMEBUFFER, FBO);
+   glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT,
+                                GL_COLOR_ATTACHMENT0_EXT,
+                                GL_RENDERBUFFER_EXT, RBO);
+
+   stat = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT);
+   if (stat != GL_FRAMEBUFFER_COMPLETE_EXT) {
+      perf_printf("fboswitch: Error: incomplete FBO!\n");
+      exit(1);
+   }
+
+   /* clear the FBO */
+   glDrawBuffer(GL_COLOR_ATTACHMENT0_EXT);
+   glViewport(0, 0, MaxSize, MaxSize);
+   glClear(GL_COLOR_BUFFER_BIT);
+}
+
+
+static void
+CopyTexImage(unsigned count)
+{
+   unsigned i;
+   for (i = 1; i < count; i++) {
+      /* draw something */
+      if (DrawPoint)
+         glDrawArrays(GL_POINTS, 0, 1);
+
+      /* copy whole texture */
+      glCopyTexImage2D(GL_TEXTURE_2D, 0,
+                       GL_RGBA, 0, 0, TexSize, TexSize, 0);
+   }
+   glFinish();
+}
+
+
+static void
+CopyTexSubImage(unsigned count)
+{
+   unsigned i;
+   for (i = 1; i < count; i++) {
+      /* draw something */
+      if (DrawPoint)
+         glDrawArrays(GL_POINTS, 0, 1);
+
+      /* copy sub texture */
+      if (TexSubImage4) {
+         /* four sub-copies */
+         GLsizei half = TexSize / 2;
+         /* lower-left */
+         glCopyTexSubImage2D(GL_TEXTURE_2D, 0,
+                             0, 0, 0, 0, half, half);
+         /* lower-right */
+         glCopyTexSubImage2D(GL_TEXTURE_2D, 0,
+                             half, 0, half, 0, half, half);
+         /* upper-left */
+         glCopyTexSubImage2D(GL_TEXTURE_2D, 0,
+                             0, half, 0, half, half, half);
+         /* upper-right */
+         glCopyTexSubImage2D(GL_TEXTURE_2D, 0,
+                             half, half, half, half, half, half);
+      }
+      else {
+         /* one big copy */
+         glCopyTexSubImage2D(GL_TEXTURE_2D, 0,
+                             0, 0, 0, 0, TexSize, TexSize);
+      }
+   }
+   glFinish();
+}
+
+
+/** Called from test harness/main */
+void
+PerfNextRound(void)
+{
+}
+
+
+/** Called from test harness/main */
+void
+PerfDraw(void)
+{
+   double rate, mbPerSec;
+   GLint sub, maxTexSize;
+
+   glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTexSize);
+
+   /* loop over whole/sub tex copy */
+   for (sub = 0; sub < 2; sub++) {
+
+      /* loop over texture sizes */
+      for (TexSize = MinSize; TexSize <= MaxSize; TexSize *= 4) {
+
+         if (TexSize <= maxTexSize) {
+            GLint bytesPerImage = 4 * TexSize * TexSize;
+
+            if (sub == 0)
+               rate = PerfMeasureRate(CopyTexImage);
+            else {
+               /* setup empty dest texture */
+               glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA,
+                            TexSize, TexSize, 0,
+                            GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+               rate = PerfMeasureRate(CopyTexSubImage);
+            }
+
+            mbPerSec = rate * bytesPerImage / (1024.0 * 1024.0);
+         }
+         else {
+            rate = 0.0;
+            mbPerSec = 0.0;
+         }
+
+         perf_printf("  glCopyTex%sImage(%d x %d): %.1f copies/sec, %.1f Mpixels/sec\n",
+                     (sub ? "Sub" : ""), TexSize, TexSize, rate, mbPerSec);
+      }
+   }
+
+   exit(0);
+}